/*
 * Copyright 2010-2012 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.pathlet.core.config.anno;

import java.lang.annotation.*;

/**
 *
 * InstanceIn annotation, it marks a field to be injected the Pathlet Instance by dependency injection facilities.
 *
 * @author Charlie Zhang
 *
 */
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.FIELD, ElementType.METHOD})
public @interface InstanceIn {

	/**
	 * The path of the instance to be injected.
	 * 可以是相对路径，也可以是绝对路径。
	 */
	String path() default "";

	/**
	 * Declares whether the annotated dependency is required.
	 * <p>Defaults to {@code true}.
	 */
	boolean required() default true;

	/**
	 * Declares whether the annotated dependency is by type.
	 * 当path为空，或者通过path找不到对应的实例时，是否通过类型查找。
	 * <p>Defaults to {@code true}.
	 */
	boolean byType() default true;


}
